• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
FinanceRoad to Wealth

Warren Buffett: My $100 billion blunder

By
Stephen Gandel
Stephen Gandel
Down Arrow Button Icon
By
Stephen Gandel
Stephen Gandel
Down Arrow Button Icon
February 28, 2015, 8:00 AM ET
Video Poster

Warren Buffett is worth more than $70 billion. But in this year’s annual letter to Berkshire Hathaway shareholders, Buffett writes that he made a business mistake that may have cost him and his investors much more than that.

This year marks the 5oth anniversary of Buffett and his investment partners’ decision to take control of Berkshire Hathaway. In this year’s letter to shareholders, Buffett takes a stroll down memory lane and recalls how he took over Berkshire Hathaway, which at the time was a struggling textile manufacturer based in Bedford, Mass. Along with that story, Buffett shares what he says were two of his biggest business and investment mistakes, one of which he claims cost him and his investors $100 billion.

The first mistake Buffett mentions is, surprisingly, buying Berkshire. Buffett calls the actions that led up to his purchase of Berkshire a “monumentally stupid decision.” He says he knew Berkshire was a troubled company and that he had only bought into it because he thought it was cheap. Buffett expected to make a quick profit and get out. And he almost did.

But when, in May 1964, Berkshire CEO Seabury Stanton offered Buffett slightly less than what he had promised to repurchase his stake in the company, the 34-year old investor bristled, even though the price Stanton offered would have given Buffett a 52% return for his two-year investment. Instead, Buffett launched a takeover campaign. By the following May, Buffett and his partners had taken control of the company.

It was a bad move.

Berkshire continued to struggle. And Buffett threw good money after bad trying to turnaround the company’s textile mills. He eventually closed Berkshire’s operations two decades later.

But Buffett claims his biggest mistake came two years later. In early 1967, he bought the business that would eventually be the seed of Berkshire’s insurance, investment, and, eventually, conglomerate empire. Buffett bought and merged it into Berkshire, the publicly traded company that he still runs today.

Buffett says if he had bought the insurance business through his investment partnership hedge fund, which he still ran at the time, he and his investors would have captured all of the investment gains he has created over the past 50 years. Instead, he has shared those gains with the public shareholders of Berkshire Hathaway.

But it’s hard to consider this a mistake that Buffett truly regrets. It’s odd to imagine what Buffett would be like now or, indeed, what the world would be like if the legendary investor had remained a hedge fund manager and not the head of what became the most successful publicly traded investment partnership in history, into which anyone, who had the money, could buy into and become rich. And there likely wouldn’t have been 50 years of investment letters and Buffett wisdom for all to read. This year’s letter, like the others, is great.

There are plenty of other gems in the special section of this year’s letter titled, “Berkshire – Past, Present and Future,” particularly if you are a Buffett fan. And if not for Buffett’s $100 billion mistake, there would probably be a lot fewer of those.

Watch more business news from Fortune:

About the Author
By Stephen Gandel
See full bioRight Arrow Button Icon

Latest in Finance

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Finance

francis
CommentaryFlorida
Former Miami Mayor Francis Suarez: Why I’m joining Stephen Ross and Ken Griffin in betting big on ambitious business leaders
By Francis SuarezMay 1, 2026
20 minutes ago
By staying on the Fed’s board, Jerome Powell could be doing incoming Chairman Kevin Warsh a huge favor 
EconomyFederal Reserve
By staying on the Fed’s board, Jerome Powell could be doing incoming Chairman Kevin Warsh a huge favor 
By Jason MaMay 1, 2026
28 minutes ago
bessent
Personal FinanceFinancial Literacy
Scott Bessent on financial literacy: ‘it drives me crazy’ to see young men in blue-collar construction jobs playing the lottery
By Fatima Hussein and The Associated PressMay 1, 2026
2 hours ago
Top CD rates from major banks May 1, 2026: Chase CDs, Bank of America CDs, Citibank CDs, and more
Personal FinanceCertificates of Deposit (CDs)
Top CD rates from major banks on May 1, 2026: Chase CDs, Bank of America CDs, Citibank CDs, and more
By Joseph HostetlerMay 1, 2026
2 hours ago
Current price of Ethereum for May 1, 2026
Personal FinanceEthereum
Current price of Ethereum for May 1, 2026
By Joseph HostetlerMay 1, 2026
2 hours ago
Current price of Bitcoin for May 1, 2026
Personal FinanceCryptocurrency
Current price of Bitcoin for May 1, 2026
By Joseph HostetlerMay 1, 2026
2 hours ago

Most Popular

China dominates the world's lithium supply. The U.S. just found 328 years' worth in its own backyard
North America
China dominates the world's lithium supply. The U.S. just found 328 years' worth in its own backyard
By Jake AngeloApril 30, 2026
21 hours ago
Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
Success
Apple cofounder Ronald Wayne—whose stake would be worth up to $400 billion had he not sold it in 1976—says that at 91, he has no regrets
By Preston ForeApril 27, 2026
4 days ago
Accenture's Julie Sweet blew up 50 years of company history. She says the hardest part is still ahead
Conferences
Accenture's Julie Sweet blew up 50 years of company history. She says the hardest part is still ahead
By Nick LichtenbergApril 29, 2026
2 days ago
America shot its arsenal empty in 2 wars. Now it needs Beijing's permission to reload
Commentary
America shot its arsenal empty in 2 wars. Now it needs Beijing's permission to reload
By Steve H. Hanke and Jeffrey WengApril 30, 2026
22 hours ago
Exclusive: America's largest Black-owned bank launches podcast with mission to unlock hidden shame holding back generational wealth
Banking
Exclusive: America's largest Black-owned bank launches podcast with mission to unlock hidden shame holding back generational wealth
By Nick LichtenbergApril 29, 2026
2 days ago
Google Cloud revenue is now 18% of Alphabet's business. Is this the beginning of the end of Google's search identity?
Big Tech
Google Cloud revenue is now 18% of Alphabet's business. Is this the beginning of the end of Google's search identity?
By Alexei OreskovicApril 29, 2026
2 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.